Prehypertension

Slightly elevated blood pressure is known as prehypertension. Prehypertension will likely turn into high blood pressure (hypertension) . Both prehypertension and high blood pressure increase risk of heart attack, stroke and heart failure. Prehypertension is a systolic pressure from 120 to 139 mm Hg or a diastolic pressure from 80 to 89 mm Hg. Prehypertension doesn't cause symptoms. The only way to detect prehypertension is to keep track of blood pressure readings.